Thermal Operation of Four-Zone Simulated Moving Beds

2007 ◽  
Vol 46 (22) ◽  
pp. 7208-7220 ◽  
Author(s):  
Weihua Jin ◽  
Phillip C. Wankat
Keyword(s):  
Thermal Operation ◽  
Simulated Moving Beds

Solvent gradient operation of simulated moving beds

2002 ◽  
Vol 944 (1-2) ◽  
pp. 23-39 ◽  
Author(s):  
Stefanie Abel ◽  
Marco Mazzotti ◽  
Massimo Morbidelli
Keyword(s):  
Simulated Moving Beds

Fatigue Life and Reliability Consideration During Field Repair of Coke Drum and Piping

2017 ◽  
Author(s):  
Tej Chadda ◽  
Umakanthan Anand
Keyword(s):  
Fatigue Life ◽  
Case Studies ◽  
Fatigue Cracks ◽  
High Stress ◽  
Cost Effective ◽  
Thermal Operation ◽  
Delayed Coking ◽  
First Case ◽  
Crack Repair

Aging coke drums and their connected overhead piping in delayed coking units experience fatigue cracks which most commonly occur at the skirt junction and high stress pipe welds. This paper presents 2-case studies of this new cost-effective repair methodology with fatigue resistant design upgrade. The first case study applies to coke drum weld build-up solid skirt crack repair and the second for overhead vapor line weld crack repair. This paper presents new field repair methodology which could also improve long term fatigue resistance. It also suggests optimizing the thermal operation & thermal gradients of coke drums for further reliability improvement. Based on FEA, successful field execution and our experience, these case studies demonstrate a long term improvement in reliability and fatigue life of the order of 2.5 to 3 or higher especially if combined with thermal operation optimization.

Effect of the structural parameters of bath furnaces on their thermal operation and intensification of technological processes

1996 ◽  
Vol 53 (4) ◽  
pp. 99-101
Author(s):  
V. B. Kut'in ◽  
V. G. Lisienko ◽  
S. N. Gushchin ◽  
B. A. Fetisov
Keyword(s):  
Structural Parameters ◽  
Thermal Operation ◽  
Technological Processes
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